Tool bar clamp



Oct. 21, 1941. J. HIPPLE TOOL BAR GLAMI? Filed Nov. 24, 1939 Inventor Jizmes L Hip vie 2y M 091g.

Patented Oct. 21, 1941 TOOL BAR James L. Hippie, Canton, Ill., assignor to International Harvester Company, a corporation of New Jersey Application November 24, 1939, Serial No. 305,845

4 Claims.

This invention relates to a tool bar clamp for harrow teeth. More specifically it relates to an easily attached, detached, and adjustable clamping means for harrow teeth and other groundworking elements.

In harrows and other types of implements using ground-working elements, it is frequently desirable to adjust them laterally on the tool bar. It is also desirable to be able to replace the ground-working elements, should they become broken during the operation of the machines. It is, therefore, the object of this invention to provide a clamping means that will hold the teeth on the tool bar and provide for quick adjustment and interchangeability of the teeth.

Another object of the present invention is to provide a mounting for a ground-working element which will not affect the eflicient operation thereof.

Another object of the present invention is to provide an attaching means for ground-working elements that can be manufactured cheaply.

According to the present invention there are provided upper and lower clamp parts adapted to fit a tool bar. The lower part is provided with a groove, a pair of slots, and an opening. The ground-working element has a straight attaching portion, at the end of which there is provided an opening. The straight attaching portion is placed in the groove of the lower part. A bolt,

inserted through the opening in the lower part and the opening in the end of the ground-working element, serves to hold the ground-working element against fore and aft movement with respect to the lower part and the groove prevents the ground-working element from moving laterally. A pair of eye-bolts encircle the straight attaching portion of the ground-working element and extend through the slots provided in the lower part and through openings provided in the upper part.

By this construction the attaching portion of the ground-working element need not be bent and weakened. The t through the end of the ground-working el ent and the flanges on the lower part securely hold the element on the tool bar.

In the drawing:

Figure 1 is a side view of the novel clamping means mounted on a tool bar;

Figure 2 is a sectional view taken along the line 2-2 of Figure 1;

Figure 3 is a sectional view taken along the line 3-3 of Figure 1; and,

Figure 4 is a side view of the ground-working element.

Referring to Figure 1, there is shown a tool bar I0, rectangular in cross-section, to which a series of ground-working elements II may be clamped. Each ground-working element comprises a coil portion I2 and a straight attaching portion I3. A hole It is provided in the end of the straigh attaching portion I3.

The clamping means comprises an upper part I4 and a lower part I5. The upper part I4 has a notched portion I6, which is adapted to fit the tool bar I0, and also has a pair of holes I! therein. The lower part I5 has a notched portion I8, which is adapted to fit the tool bar III. The lower part I5 extends to one side of the tool bar ill to form a portion I9, which has an opening ll of the straight attaching portion I3 and the opening 2| in the lower part I5. A nut 25 is provided on the bolt 24, which secures the ground-working element to the lower part I5.

The belt prevents fore and aft movement of the ground-working element II, and the ribs 22 prevent lateral shifting of the ground-working element II. By making the end of the groundworking element straight, various bending operations are eliminated which have been necessary in other constructions.

A pair of eye-bolts 26 encircles the straight attaching-portion I3 and extends upwardly through the slots 23 in the lower part I5 and up through the openings I! in the upper part I4. Nuts 21 are provided on the ends of the eye-bolts 26, which, when tightened, secure the upper 'and lower parts and the straight attaching portions of the ground-working elements on the tool bar III. a g

In the event the ground-working elements are broken or must be replaced, the bolt 24 is removed and the nuts 21 are loosened. The ground-working element is then moved out of the lower part I5 and a new ground-working element may be readily placed in the part I5 and the nut 24 replaced. The nuts 21 are then retightened and the unit is secured on the tool bar II). By loosening the two bolts 21, the complete unit may be moved laterally on the tool bar III. As shown in Figure 4, the ground-working elements I I have a straight attaching portion it, which contacts the lower surfaces of the part I! between the two ribs 22. By this construction the attaching portions or the teeth are not weakened by bending and are rigidly supported in the lower part I! at three points.

From the foregoing description it will be obvious that a new and novel attaching means has been provided for securing a ground-working element on a tool bar.

It will be apparent that changes may be made in the above construction without departing from the spirit of the invention. For example, the tool,

bar and the ground-working element maybe of any cross-sectional shape, and the ground-working element need not have the coil portion. It is intended to limit the invention only within the terms of the appended claims.

What is claimed is:

1. In a harrow construction comprising a carrying bar of rectangular section, a clamp in engagement with two sides of the carrying bar, a groove in the clamp, a tooth comprising a body portion with an end portion extending therefrom in engagement with the groove in the clamp, alined openings being formed in the clamp and the end of the tooth, a bolt provided in the openings for holding the tooth to the clamp, a cap in engagement with the other two sides 01' the carrying bar, eye-bolts straddling the end of the tooth and extending through alined openings formed in the clamp and the cap, and nuts on the ends of the eye-bolts for securing the tooth to the clamp and the clamp and cap to the carrying bar.

2. In combination, an implement tool bar, a clamp and a cap embracing the tool bar, said clamp having a groove formed therein and a hole at one end of the groove, 9. ground-engaging member having a straight end and a hole formed at the end thereof with said end inserted in the groove of the clamp, clamping means comprising a. bolt extending through the hole in the end of the ground-engaging member and the hole at one end of the clamp, and eye-bolts embracing the end of the ground-engaging member and passing through the clamp and the cap, and nuts on the ends of the eye-bolts for securing the parts on the tool bar.

3. In combination, an implement tool bar, a clamp and cap embracing the tool bar, a groundengaging member having a straight end engaging the clamp, a bolt passing through the end of the ground-engaging member and the clamp, eye-bolts encircling the ground-engaging member and passing through the clamp and the cap, and nuts on the eye-bolts for holding the parts on the tool bar.

4. In combination, an implement tool bar, a clamp and cap embracing the tool bar, said clamp having a pair of flanges formed along one surface thereof, there being formed a hole in the end of the clamp, a ground-engaging member having a straight end portion with a hole formed at the end thereof with said end positioned between the flanges, a bolt extending through the hole in the clamp and the hole in the end of the ground-engaging member for holding the member against fore and aft movement with respect to the clamp, eye-bolts encircling the end or the ground-engaging member and passing through the clamp and the cap, and nuts on the end of the eye-bolts for holding the parts on the tool bar.

JAMES L. HIPPLE. 

